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Abstract:

A scheduling method is disclosed by the present invention, and the method
includes: a network element 1 transmitting downlink message to a network
element 2, and scheduling the network element 2 to transmit or receive
data over a plurality of subframes; according to the downlink message,
the network element 2 using same scheduling information or different
scheduling information to transmit or receive data over the plurality of
subframes. A scheduling system is also disclosed by the present
invention, and the system includes: a scheduling unit which is used to
transmit downlink message to the network element 2 by the network element
1, and schedule the network element 2 to transmit or receive data over a
plurality of subframes. With the method and system of the present
invention, the scheduling for various network elements can be realized
compatibly.

Claims:

1. A scheduling method, comprising: a network element 1 transmitting
downlink message to a network element 2, and scheduling the network
element 2 to transmit or receive data over a plurality of subframes; and
the network element 2, according to the downlink message, transmitting or
receiving the data over the plurality of subframes by using same
scheduling information or different scheduling information.

2. The method according to claim 1, wherein, before the network element 1
transmits the downlink message to the network element 2, the method
further comprises: the network element 1 transmitting a radio resource
control (RRC) signaling or a media access control (MAC) control element
which carries information about a number of the plurality of subframes to
the network element 2; or, information about the number of the plurality
of subframes being preset in a protocol.

3. The method according to claim 1, further comprising: when the downlink
message carries one piece of scheduling information, the network element
2 transmitting or receiving the data over the plurality of subframes by
using same scheduling information; or, when the downlink message carries
a plurality of pieces of scheduling information, the network element 2
transmitting or receiving the data over the plurality of subframes by
using different scheduling information.

5. The method according to claim 1, wherein, the downlink message is
downlink control information (DCI) indicated by a radio network temporary
identifier (C-RNTI), or DCI indicated by a dedicated C-RNTI, or dedicated
DCI indicated by a C-RNTI, or dedicated DCI indicated by a dedicated
C-RNTI.

6. The method according to claim 5, wherein, when the downlink message is
the DCI indicated by the C-RNTI, the method further comprises: before the
network element 1 transmits the downlink message to the network element
2, the network element 1 transmitting an RRC signaling or a MAC control
element carrying identification information which activates the
scheduling to the network element 2.

7. The method according to claim 5, further comprising: the dedicated
C-RNTI being carried in an RRC signaling or a MAC control element; and
the network element 1 transmitting the RRC signaling or the MAC control
element to the network element 2.

8. The method according to claim 5, wherein, the dedicated DCI comprises
any one or a combination of at least one of following information:
information 1: carrying an identifier indicating to start the scheduling;
information 2: the number of the plurality of subframes; information 3: a
plurality of pieces of associated resource information when the network
element 2 transmits or receives the data over the plurality of subframes;
information 4: a plurality of pieces of associated HARQ information when
the network element 2 transmits or receives the data over the plurality
of subframes.

9. The method according to claim 8, wherein, the resource information
comprises: at least one of resource block information, modulation and
coding scheme information, and transmitting power information; and the
HARQ information comprises: at least one of new data indicating
information, redundancy version information, and HARQ process
information.

10. The method according to claim 1, further comprising: the network
element 1 explicitly or implicitly performing schedule indicating to
schedule the network element 2 to transmit or receive the data over one
subframe; or to schedule the network element 2 not to transmit or receive
the data.

11. The method according to claim 10, further comprising: transmitting
the downlink message to the network element 2 through the network element
1 to perform the schedule indicating explicitly.

12. The method according to claim 10, further comprising: performing the
schedule indicating implicitly by judging whether a timer maintained by
the network element 2 is expired; when determining that the timer
maintained by the network element 2 is expired, scheduling the network
element 2 to transmit or receive the data over one subframe; or,
scheduling the network element 2 not to transmit or receive the data.

13. A scheduling system, comprising: a scheduling unit and a
transmitting/receiving unit; wherein, the scheduling unit is configured
to transmit downlink message to a network element 2 by a network element
1, and schedule the network element 2 to transmit or receive data over a
plurality of subframes; and the transmitting/receiving unit is configured
to, according to the downlink message, transmit or receive the data over
the plurality of subframes by the network element 2 by using same or
different scheduling information.

14. The system according to claim 13, wherein, the scheduling unit is
further configured to explicitly or implicitly perform schedule
indicating by the network element 1 to schedule the network element 2 to
transmit or receive the data over one subframe; or to schedule the
network element 2 not to transmit or receive the data.

15. The system according to claim 14, wherein, the scheduling unit is
further configured to transmit the downlink message to the network
element 2 through the network element 1 to perform the schedule
indicating explicitly; or, the scheduling unit is further configured to
perform the schedule indicating implicitly by judging whether a timer
maintained by the network element 2 is expired.

Description:

TECHNICAL FIELD

[0001] The present invention relates to the communication field, and in
particular, to a scheduling method and system.

BACKGROUND OF THE RELATED ART

[0002] The evolved universal terrestrial radio access network (E-UTRAN) of
the third generation mobile communication long term evolution (LTE) is
composed of the enhanced base station (eNB), which supports the hybrid
automatic repeat request (HARQ) function and is used for improving the
reliability of successful transmission. The user equipment (UE) has an
HARQ entity in downlink and uplink respectively, and the HARQ entity
supports the plurality of HARQ processes and follows parallel
stop-and-wait protocol. The HARQ information mainly includes: HARQ
process information, new data indicator (NDI) information and redundancy
version information. The uplink supports the synchronous HARQ, implying
that the HARQ process identifier can be obtained according to the
subframe number. The downlink supports the asynchronous HARQ, implying
that the HARQ process identifier is indicated according to the downlink
control information (DCI). The first transmission of the HARQ and the
retransmission of the HARQ use the same HARQ process.

[0003] The E-UTRAN supports the dynamic scheduling. The dynamic scheduling
refers to that E-UTRAN can dynamically allocate the resource to the UE
through the cell radio network temporary identifier (C-RNTI) on the
physical downlink control channel (PDCCH) at each transmit time interval
(TTI) corresponding to one subframe, for example, the physical resource
block (PRB) and modulation and coding scheme (MCS), etc. The PDCCH mainly
carries the resource allocation information, mainly including the
information such as the resource block (RB) allocation information, the
MCS, the HARQ information, etc. In uplink, the UE generates data packets
according to the information and sends the data packets to the base
station through the physical uplink shared channel (PUSCH). The E-UTRAN
sends for the data packets the acknowledgement response message
(ACK)/non-acknowledgement response message (NACK) of the feedback hybrid
automatic repeat request through the physical HARQ indicator channel
(PHICH). In the downlink, the UE receives in the physical downlink shared
channel (PDSCH) the data packets sent by the base station according to
the information. The UE sends the ACK/NACK of the feedback hybrid
automatic repeat request for the data packets through the PUSCH or the
physical uplink control channel (PUCCH).

[0004] The E-UTRAN also supports the semi-persistent scheduling. The
semi-persistent scheduling is suitable for the service of which the data
packet is minor and the transmission time interval is relatively fixed,
and the purpose is to reduce the signaling expense. The semi-persistent
scheduling refers to that: the E-UTRAN can semi-persistently allocate the
resource through the special C-RNTI on the PDCCH to the UE, including the
PRB and the MCS, etc. The resource can only be used for the first
transmission of the HARQ, and the resource can be reused periodically,
and the typical period is 20 ms. When needed, the retransmission
information is indicated with the explicit signaling through the PDCCH,
that is, the retransmission of the HARQ retransmission uses the dynamic
scheduling. The semi-persistent scheduling is initially configured by the
radio resource control (RRC) signaling, for example, allocating the
period of the semi-persistent scheduling. Wherein, the special C-RNTI and
C-RNTI used by the dynamic scheduling are different.

[0005] In the uplink, the E-UTRAN also supports the TTI bundling. The TTI
bundling is suitable for the users of the cell border, and the purpose is
to improve the reliability of the successful transmission. The UTRAN
allocates the resource for the first transmission and the retransmission
of the HARQ sent by the UE, including PRB and MCS, etc. Once the TTI
bundling is configured, that is, one group of subframes are configured,
the UE utilizes the same resource to send the first transmission and the
retransmission of the HARQ in this one group of subframe, meaning that
the C-RNTI used to allocate the resource each time is not only used for
the first transmission of the HARQ but also used for the retransmission
of the HARQ. No matter the uplink transmission in the bundling is
successful or not, the continuous subframes of the UE in the bundling are
in one group of TTIs, and the UE occupies an identical HARQ process to
transmit the uplink data, including the first transmission and a
plurality of non-adaptive retransmissions, and the UD does not need to
judge whether the last transmission is successful when retransmitting.
The moment of the feedback for the uplink data is based on the last
subframe of this group of the TTIs.

[0006] At present, the third generation partnership projects (3GPP)
introduces the long term evolution advance (LTE-A) standard. Wherein, the
wireless relay technology is one of the technologies in the LTE-A, which
aims at expanding the coverage area of the cell, reducing the corner area
in the communication, balancing the load, transferring the service of the
hot spot area, and saving the transmitting power of the UE.

[0007] FIG. 1 is a structure diagram of the network utilizing the wireless
relay technical in the related art. As shown in FIG. 1, some new relay
nodes (RN) are added between the original base station (Donor-eNB) and
the UE, and these newly-added RNs and Donor-eNB are connected wirelessly,
and there is no wired connection with the transmission network. Wherein,
the wireless link between the Donor-eNB and the RN is called a backhaul
link, and also can be called the Un interface; and the wireless link
between the RN and the UE is called an access link. The downlink data
reaches the Donor-eNB firstly, and then the data are transmitted to the
RN, and the RN transmits the data to the UE; and in the uplink, it is
just on the opposite, which will no longer be described in details here.

[0008] In order to configure the resources of the backhaul link, it is to
define the relay-physical dedicated downlink control channel (R-PDCCH),
the relay-physical dedicated downlink shared channel (R-PDSCH) and the
relay-physical dedicated uplink shared channel (R-PUSCH). The R-PDCCH can
schedule the RN to receive the data on the R-PDSCH in one or more Un
downlink subframes, and the R-PDCCH can schedule the RN to receive the
data on the R-PUSCH in one or more Un uplink subframes.

[0009] The base station schedules the RN to transmit/receive the date in a
plurality of Un uplink subframes through the R-PDCCH, thus saving
the signaling expense of the R-PDCCH. In the case that the service volume
of the UE of the macro cell increases, the base station can use this part
of saved resources to schedule the transmission of the UE of the macro
cell.

[0010] In the current scheduling technology, when transmitting in a
plurality of subframes, the UE adopts the two kinds of scheduling ways,
i.e. the above-mentioned semi-persistent scheduling and the
above-mentioned TTI bundling, to perform the scheduling, but these two
kinds of scheduling ways used by the UE when transmitting in a plurality
of subframes are not suitable for scheduling the network element in the
wireless relay system.

[0011] Taking the network element in the wireless relay system as an
example, since the data of the RN is integrated with the data of one or
more UEs of the relay cell, the data packet is relatively large, and the
time interval is unfixed, while the semi-persistent scheduling way aims
at the service of which the data packet is minor and the transmission
time interval is relatively fixed, thus the RN does not possess the
characteristic of the service applied for the semi-persistent scheduling,
so the current above-mentioned semi-persistent scheduling is not suitable
for scheduling the RN. In addition, the signal channel quality of the
backhaul link is relatively good, so the retransmission probability of
the RN is relatively low, and the TTI bundling way aims at a user at the
border of the cell, of which the transmission success rate is low and the
retransmission probability is high, and uplink subframe resource of the
Un is limited, thus, if adopting the TTI bundling way, the uplink
resource of the Un will be wasted, so the current above-mentioned
TTI bundling is not suitable for scheduling the RN either.

[0012] In a word, the current ways of both the semi-persistent scheduling
and the TTI bundling are not suitable for scheduling the RN, that is to
say, after introducing the radio relay technology, the current scheduling
way is still adopted to perform the scheduling, the scheduling for
various network elements, such as, the UE, the RN, etc. can not be
achieved compatibly. Now one scheduling solution which can be suitable
for scheduling all kinds of the network elements commonly is needed
urgently.

SUMMARY OF THE INVENTION

[0013] In view of above, the main objective of the present invention is to
provide a scheduling method and system, which can be commonly suitable
for scheduling various network elements and has the compatibility.

[0014] In order to achieve the above-mentioned objective, the technical
scheme of the present invention is implemented as follows:

[0015] a scheduling method, comprising:

[0016] a network element 1 transmitting downlink message to a network
element 2, and scheduling the network element 2 to transmit or receive
data over a plurality of subframes; and

[0017] the network element 2, according to the downlink message,
transmitting or receiving data over the plurality of subframes by using
same scheduling information or different scheduling information.

[0018] Wherein, before the network element 1 transmits the downlink
message to the network element 2, the method further comprises: the
network element 1 transmitting a radio resource control (RRC) signaling
or a media access control (MAC) control element which carries information
about the number of the plurality of subframes to the network element 2;
or, information about the number of the plurality of subframes is preset
in a protocol.

[0019] Wherein, the method further comprises:

[0020] when the downlink message carries one piece of scheduling
information, the network element 2 transmitting or receiving data over
the plurality of subframes by using same scheduling information; or

[0021] when the downlink message carries a plurality of pieces of
scheduling information, the network element 2 transmitting or receiving
data over the plurality of subframes by using different scheduling
information.

[0023] Wherein, the downlink message is downlink control information (DCI)
indicated by a radio network temporary identifier (C-RNTI), or DCI
indicated by a dedicated C-RNTI, or dedicated DCI indicated by a C-RNTI,
or dedicated DCI indicated by a dedicated C-RNTI.

[0024] Wherein, when the downlink message is the DCI indicated by the
C-RNTI, the method further comprises: before the network element 1
transmits the downlink message to the network element 2, the network
element 1 transmitting an RRC signaling or the MAC control element
carrying identification information which activates the scheduling to the
network element 2.

[0025] Wherein, the method further comprises: the dedicated C-RNTI being
carried in an RRC signaling or a MAC control element; and the network
element 1 transmitting the RRC signaling or the MAC control element to
the network element 2.

[0026] Wherein, the dedicated DCI comprises any one or a combination of at
least one of the following information:

[0027] the information 1: carrying an identifier indicating to start the
scheduling;

[0028] the information 2: the number of the plurality of subframes;

[0029] the information 3: a plurality of pieces of associated resource
information when the network element 2 transmits or receives the data
over the plurality of subframes;

[0030] the information 4: a plurality of pieces of associated HARQ
information when the network element 2 transmits or receives the data
over the plurality of subframes.

[0031] Wherein, the resource information comprises: at least one of
resource block information, modulation and coding scheme information, and
transmitting power information; and

[0032] the HARQ information comprises: at least one of new data indicating
information, redundancy version information, and HARQ process
information.

[0033] Wherein, the method further comprises: the network element 1
explicitly or implicitly performing schedule indicating, to schedule the
network element 2 to transmit or receive the data over one subframe; or
to schedule the network element 2 not to transmit or receive the data.

[0034] Wherein, the method further comprises: transmitting the downlink
message to the network element 2 through the network element 1 to perform
the schedule indicating explicitly.

[0035] Wherein, the method further comprises: performing the schedule
indicating implicitly by judging whether a timer maintained by the
network element 2 is expired; when determining that the timer maintained
by the network element 2 is expired, scheduling the network element 2 to
transmit or receive the data over one subframe; or, scheduling the
network element 2 not to transmit or receive the data.

[0036] A scheduling system, comprising: a scheduling unit and a
transmitting/receiving unit; wherein,

[0037] the scheduling unit is configured to transmit downlink message to a
network element 2 by a network element 1, and schedule the network
element 2 to transmit or receive data over a plurality of subframes; and

[0038] the transmitting/receiving unit is configured, according to the
downlink message, to transmit or receive the data over the plurality of
subframes by using same or different scheduling information by the
network element 2.

[0039] Wherein, the scheduling unit is further configured to explicitly or
implicitly perform schedule indicating by the network element 1 to
schedule the network element 2 to transmit or receive the data over one
subframe; or, schedule the network element 2 not to transmit or receive
the data.

[0040] Wherein, the scheduling unit is further configured to transmit the
downlink message to the network element 2 through the network element 1
to perform the schedule indicating explicitly;

[0041] or the scheduling unit is further configured to perform the
schedule indicating implicitly by judging whether a timer maintained by
the network element 2 is expired.

[0042] The network element 1 of the present invention transmits the
downlink message to the network element 2, and schedules the network
element 2 to transmit or receive data over the plurality of subframes;
the network element 2 transmits or receives data over the plurality of
sub-frames by using the same or different scheduling information
according to the downlink message.

[0043] Adopting the present invention, it can be commonly suitable for
scheduling various network elements and has the compatibility. For
example, it can make the network element 1, such as the base station, in
the radio relay system schedule the network element 2, such as the RN, in
the radio relay system, to transmit data over a plurality of Un
uplink subframes, or schedule the RN to receive data over a plurality of
downlink Un subframes; and also can perform the scheduling for the
UE to transmit data over a plurality of uplink subframes or receive the
data over a plurality of downlink subframes.

BRIEF DESCRIPTION OF DRAWINGS

[0044] FIG. 1 is a structure diagram of a network utilizing a wireless
relay technical in the related art;

[0045] FIG. 2 is a scheduling diagram of embodiment 1 of the present
invention;

[0046]FIG. 3 is a scheduling diagram of embodiment 1 of the present
invention;

[0047] FIG. 4 is a scheduling diagram of embodiment 1 of the present
invention;

[0048] FIG. 5 is a scheduling diagram of embodiments 1 and 2 of the
present invention.

PREFERRED EMBODIMENTS OF THE PRESENT INVENTION

[0049] The basic idea of the present invention is: a network element 1
transmitting downlink message to a network element 2, and scheduling the
network element 2 to transmit or receive data over a plurality of
subframes; and the network element 2, according to the downlink message,
using same or different scheduling information to transmit or receive
data over the plurality of subframes.

[0050] The implementation of the technical scheme is further described in
detail combining with the accompanying drawings hereinafter.

[0051] A scheduling method mainly includes:

[0052] the network element 1 transmitting the downlink message to the
network element 2, and scheduling the network element 2 to transmit or
receive data over a plurality of subframes; and the network element 2,
according to the downlink message, using same or different scheduling
information to transmit or receive data over the plurality of subframes.
Wherein, when the network element 2 is an RN, the plurality of subframes
can be a plurality of Un subframes.

[0053] Further, before the network element 1 transmits the downlink
message to the network element 2 or at the same time, the network element
1 configures the related configuration information for the network
element 2, including: the number of the plurality of subframes. And it
also includes a dedicated C-RNTI, and/or a duration of a timer indicating
the effective time of the scheduling. Or the number of the plurality of
subframes is preset in a protocol, further including: before transmitting
the downlink message or at the same time, the network element 1
configures the related configuration information for the network element
2, including: the dedicated C-RNTI, and/or the duration of the timer
indicating the effective time of the scheduling.

[0054] Further, the downlink message includes: a radio resource control
(RRC) signaling or a media access control (MAC) control element, or a
dedicated DCI. Wherein, the RRC signaling is a RRC signaling carrying the
number of the subframes and/or an identifier indicating to start the
scheduling. The RRC signaling includes RRC connection reconfiguration
message. The MAC control element is an MAC control element carrying the
number of the subframes and/or the identifier indicating to start the
scheduling. Here it needs to point out that: although the RRC signaling
and the MAC control element belong to different protocol layers, the
carried contents are coincident. In the carried contents, the identifier
indicating to start the scheduling, for example, is a true and false
value, and if the identifier is a true value (that is, equals 1, or is
TRUE), then indicating to start the scheduling; if the identifier is a
false value (that is, equals 0, or is FALSE), then indicating the
scheduling is over.

[0055] Further, the dedicated DCI comprises any one or a combination of at
least one of the following information:

[0056] the information 1: carrying an identifier indicating to start to
schedule;

[0057] the information 2: the number of the plurality of subframes;

[0058] the information 3: a plurality of pieces of associated resource
information when the network element 2 transmits or receives the data
over the plurality of subframes;

[0059] the information 4: a plurality of pieces of associated HARQ
information when the network element 2 transmits or receives the data
over the plurality of subframes. The resource information refers to: the
resource block information, the modulation and coding scheme information,
and the transmitting power information. The HARQ information refers to:
the redundancy version information, and the HARQ process information.

[0060] Further, if the downlink message is a RRC signaling or an MAC
control element, the network element 1 also transmits the DCI to the
network element 2, to indicate the network element 2 to transmit or
receive the resource information and the HARQ information related to the
data over the plurality of subframes.

[0061] The resource information refers to: at least one of the resource
block information, the modulation and coding scheme information, and the
transmitting power information. The HARQ information refers to: at least
one of the new data indicating information, the redundancy version
information, and the HARQ process information.

[0062] Further, the network element 1 explicitly or implicitly indicates
the network element 1 to finish scheduling the network element 2 to
transmit or receive the data over the plurality of subframes. That is to
say, the network element 1 explicitly or implicitly performs schedule
indicating, to schedule the network element 2 to transmit or receive data
over one subframe; or, schedule the network element 2 not to transmit or
receive data.

[0063] Explicitly indicating means: transmitting the downlink message to
the network element 2 directly through the network element 1 to perform
the schedule indicating, and scheduling the network element 2 to transmit
or receive data over one subframe; or scheduling the network element 2
not to transmit or receive data; implicitly indicating means: performing
implicitly the schedule indicating by judging whether a timer maintained
by the network element 2 is expired, that is to say, once determining
that the timer maintained by the network element 2 is expired, then
scheduling the network element 2 to transmit or receive data over one
subframe; or, scheduling the network element 2 not to transmit or receive
data.

[0064] Further, when explicitly indicating, there is a corresponding
relationship between the downlink message indicating to finish the
scheduling and the downlink message indicating to start the scheduling.
If the downlink message indicating to start the scheduling is the RRC
signaling or the MAC control element carrying the identifier indicating
to start the scheduling, then the downlink message indicating to finish
the scheduling is the RRC signaling or the MAC control element carrying
the identifier indicating to finish the scheduling; otherwise, if the
downlink message indicating to start the scheduling is a RRC signaling or
MAC control element carrying the number of the subframes which is greater
than 1, then the downlink message indicating to finish the scheduling is
the RRC signaling or MAC control element carrying the number of the
subframes which equals 1. If the downlink message indicating to start the
scheduling is a dedicated DCI, then the downlink message indicating to
finish the scheduling is the DCI in the current format, or the dedicated
DCI without carrying the resource block information. If the downlink
message indicating to start the scheduling is a dedicated DCI carrying
the identifier indicating to start the scheduling, then the downlink
message indicating to finish the scheduling is the dedicated DCI carrying
the identifier indicating to finish the scheduling.

[0065] In conclusion, the scheduling method provided by the present
invention is: the network element 1 transmitting the downlink message to
the network element 2, to indicate the network element 1 to start
adopting the scheduling method described in the present invention to
schedule the network element 2 to transmit or receive data over a
plurality of subframes. In the specific scheduling process, the network
element 1 transmits the DCI to the network element 2, indicating the
resource information, HARQ information, etc., used by the network element
2 over the plurality of subframes. The network element 2 can use the same
resource information and HARQ information in different subframes; and
also can use different resource information and HARQ information. Through
explicitly indicating or implicitly indicating, the network element 1 is
indicated to adopt the scheduling method of the present invention to
schedule the network element 2 to transmit or receive data over a
plurality of subframes.

[0066] The present invention is described taking examples hereinafter.

[0067] The embodiment one: what the present embodiment describes is that
the network element 2 obtains the situation of the resource information,
HARQ information, etc., used in the plurality of subframes through the
C-RNTI, wherein, the resource information, HARQ information, etc. are
transferred in current DCI format.

[0068] In step 1, the network element 1 transmits the downlink message to
the network element 2, indicating that the network element 1 starts to
adopt the scheduling method described in the present invention to
schedule the transmitting of the network element 2.

[0069] Here, the downlink message is the RRC signaling or the MAC control
element carrying the number of the subframes and and/or the identifier
indicating to start adopting the scheduling method of the present
invention. Here, "carrying the number of the subframes and/or indicating
to start adopting the scheduling method of the present invention" is
abbreviated as identifier hereinafter. The RRC signaling can be the RRC
connection reconfiguration message, and will not go into details
hereinafter.

[0070] Here, the number of the subframes is necessary configuration
information, indicating the number of the plurality of subframes when the
network element 1 adopts the scheduling method of the present invention
to schedule the network element 2 to transmit over the plurality of
subframes. If the downlink message only carries the identifier but not
carries the number of the subframes, it means that before this step, the
number is already obtained by the network element 2 through the protocol
predefining, or the RRC signaling or the MAC control element. If the
downlink message carries the number of the subframes, then the number of
the subframes is greater than 1. The number of the subframes in the
present embodiment is 3.

[0071] In step 2, the network element 2 obtains the DCI sent by the
network element 1 through the C-RNTI over the downlink control channel,
indicating the network element 2 to perform the first transmission of the
HARQ. The C-RNTI in this case is the same as that in dynamic scheduling.

[0072] Here, the DCI is in current DCI format, for example, the uplink
adopts the DCI format 0, and the downlink adopts the DCI format 1.

[0073] In step 3, the network element 2 performs the first transmission of
the HARQ over designated subframe according to the resource information
HARQ information, etc., carried in the DCI.

[0074] Here, the resource information mainly includes the resource block
information, the MCS information and the transmitting power information.
The HARQ information mainly includes the NDI information, the RV
information, and may also include the HARQ process information under the
situation of the asynchronous HARQ.

[0075] Here, the behavior of the network element 2 over the designated
subframe is similar to the behavior in dynamic scheduling, and the
difference lies in that the network element 2 keeps the information, such
as the resource information, HARQ information, etc. carried in the DCI,
until the number of the subframes is reached. This means that the network
element 2 will still perform the first transmission of the HARQ over the
continuous subframes following the designated subframe according to the
same resource information. Especially, as to the backhaul link, the
subframe number of the Un uplink subframe is discontinuous, and if
there is no other Un uplink subframe between two Un uplink
subframes, then these two Un uplink subframes are called the
continuous Un uplink subframes. Similarly, if there is no other
Un downlink subframe between two Un downlink subframes, then
these two Un subframes are called the continuous Un downlink subframes.

[0076] Here, since the first transmission of the HARQ is performed, that
is, the NDI changes, and the RV is 0, the network element 2 is able to
not keep the information of NDI and RV.

[0077] Here, in the case of the asynchronous HARQ, the network element 2
performing the transmission over the continuous subframes also needs the
HARQ process information. The HARQ process identifier used by the network
element 2 over the continuous subframe is the HARQ process identifier
used in the designated subframe which is denoted in ascent order, or
before step 2, the network element 1 transmits the related configuration
information indicating the HARQ process identifier to the network element
2 through the downlink message such as the RRC signaling or the MAC
control element, and the network element 2 can obtain the HARQ process
identifier used in the continuous subframe according to the configuration
information, and may also indicate the HARQ process identifier used in
the designated subframe.

[0078] Here, as shown in FIG. 2, one radio frame includes 10 subframes.
Hereinafter, in order to describe simply, the subframes are denoted in
ascent order in turn, that is, if the subframes 1, 2 of the radio frame x
are denoted as subframes 1, 2, so the subframes 1, 2 of the radio frame
(x+1) are denoted as 11, 12. In FIG. 2, a series of continuous subframes
are illustrated. The network element 2 performs the first transmission of
the HARQ over the subframe 11 according to the DCI, and performs the
first transmission of the HARQ over the subframes 16, 17 according to the
kept resource.

[0079] Here, if there is the kept resource information, HARQ information,
etc. in the designated subframe, then the network element 2 deletes the
kept information, and performs the first transmission of the HARQ
according to the resource information, HARQ information, etc., indicated
by the DCI. This means that the network element 1 updates the resource
information, HARQ information, etc. of the scheduling, and the designated
subframe is the first subframe of this scheduling. As shown in FIG. 3, in
the case that the network element 1 schedules the network element 2 to
perform the first transmission of the HARQ over the subframes 11, 16, 17
last time and when the scheduling is not finished yet, the network
element 1 updates the information of the scheduling, and reschedules the
network element 2 to perform the first transmission of the HARQ over the
subframes 16, 17, 21.

[0080] In step 4, the network element 1 transmits the downlink message to
the network element 2, indicating that the network element 1 finishes
adopting the scheduling method described in the present invention to
schedule the transmission of the network element 2.

[0081] Here, the downlink message indicating to finish has a corresponding
relationship with the downlink message indicating to start in step 1. If
the downlink message indicating to start is the RRC signaling and the MAC
control element carrying the identifier indicating to start the present
scheduling method, then the downlink message indicating to finish is the
RRC signaling and the MAC control element carrying the identifier
indicating to finish the present scheduling method; otherwise, if the
downlink message indicating to start is the RRC signaling or the MAC
control element carrying the number of the subframes which is greater
than 1, then the downlink message indicating to finish is the RRC
signaling or the MAC control element carrying the number of the subframes
which equals 1.

[0082] Here, if the network element 2 has the kept resource information,
HARQ message, etc. when receiving the downlink message, it indicates that
the network element 1 also transmits the DCI to indicate the network
element 2 to perform the first transmission of the HARQ before
transmitting the downlink messaging, as shown in step 2; while the
network element 2 has not finished the first transmission of the HARQ
over the plurality of subframes yet, then the network element 2 deletes
the kept resource information, HARQ information, etc., because the
network element 1 requires to finish the present scheduling method
through the explicit information. As shown in FIG. 4, the network element
1 schedules the network element 2 to perform the first transmission of
the HARQ over the subframes 21, 26, 27, then the network element 1
indicates to finish adopting the present scheduling method, and then the
network element 2 does not perform the first transmission of the HARQ
over the subframes 26, 27, unless the network element 1 adopts other
scheduling methods to schedule the network element 2 to perform the first
transmission of the HARQ over the subframes 26, 27.

[0083] The embodiment two: what the present embodiment describes is the
situation that the network element 2 obtains the resource information,
HARQ information, etc., used in the plurality of subframes through the
dedicated C-RNTI, wherein, the resource information, HARQ information,
etc. is transferred in the current DCI format.

[0084] In step 1, based on step 1 of the embodiment one, the downlink
message or the downlink message sent to the network element 2 by network
element 1 before step 1 carries the dedicated C-RNTI of the scheduling
method of the present invention. Here, the C-RNTI is different from that
in the embodiment one, and is a C-RNTI different from that of the dynamic
scheduling.

[0085] In step 2, the network element 2 obtains the DCI sent by the
network element 1 through the dedicated C-RNTI on the downlink control
channel, to indicate the network element 2 to perform the transmission.

[0086] Here is the transmission is the first transmission or
retransmission of the HARQ.

[0087] In step 3, based on step 3 of the embodiment one, if it is HARQ
retransmission, then the RV adopted by the network element 2 in the
continuous subframe is the RV adopted by the designated subframe, or the
RV indication adopted by the last transmission according to the
corresponding HARQ process, which is similar to the behavior of the non
adaptive retransmission.

[0088] In step 4, it is similar to the embodiment one, and will not go
into details one by one again.

[0089] Here, in the embodiment one and embodiment two, the way for
indicating that the network element 1 finishes adopting the scheduling
method described in the present invention to schedule the transmission of
the network element 2 may also be implicit, for example, the network
element 2 maintains the timer. After the network element 2 receives the
downlink message in step 1 or starts the scheduling method described in
the present invention, the network element 2 starts or restarts the timer
when receiving the first DCI in step 2, and if the timer is expired, then
the network element 2 considers that the network element 1 finishes
adopting the scheduling method of the present invention to schedule the
network element 2.

[0090] Here, the downlink message or the downlink message sent to the
network element 2 by network element 1 before step 1 carries the duration
of the timer, which indicates the effective time of the scheduling method
of the present invention.

[0091] Here, if the network element 2 has the kept resource information,
HARQ information, etc. when timer is expired, it indicates that the DCI
is transmitted to indicate the network element 2 to perform the first
transmission of the HARQ before the timer is expired, as shown in step 2,
while the network element 2 has not finished the transmission over the
plurality of subframes yet, then the network element 2 considers that the
network element 1 finishes adopting the scheduling method of the present
invention to schedule the network element 2 after finishing this
transmission over the plurality of subframes, as shown in FIG. 5, the
network element 1 schedules the network element 2 to perform the first
transmission of the HARQ over the subframes 21, 26, 27, then the timer is
expired on the subframe 26, and then the network element 2 continues to
transmit over the subframes 26, 27, that is, the timer lengthens to the
subframe 27. In the embodiment one, if the network element 2 receives the
DCI indicated by the C-RNTI and performs the first transmission of the
HARQ after the subframe 27, then the network element 2 does not keep the
resource information and the HARQ information carried by the DCI as the
processing in the dynamic scheduling. In the embodiment two, if the
network element 2 receives the DCI indicated by the dedicated C-RNTI and
performs the transmission after the subframe 27, then the network element
2 neglects the DCI or does not keep the resource information and the HARQ
information carried by the DCI as the processing of the dynamic
scheduling.

[0092] The embodiment three: what the present embodiment describes is the
situation that the network element 2 obtains the resource information
HARQ information, etc., used in the plurality of subframes through the
C-RNTI, wherein, the resource information, HARQ information, etc. is
transferred in the dedicated DCI format.

[0093] In step 1, the network element 2 obtains the DCI sent by the
network element 1 through the C-RNTI on the downlink control channel to
indicate the network element 2 to perform the transmission. Here the
C-RNTI is the same as that in the embodiment one, and also the same as
the C-RNTI in the dynamic scheduling.

[0094] Here is the transmission is the first transmission or
retransmission of the HARQ. The DCI is the dedicated DCI of the
scheduling method of the present invention. The network element 2
receives the DCI, which means that the network element 1 starts to adopt
the method of the present invention to schedule the network element 2.

[0095] Here, the dedicated DCI refers to at least one of the DCIs carrying
the identifier, the number of the subframes, a plurality of resource
information and a plurality of HARQ information indicating to start
adopting the scheduling method of the present invention. Wherein, the
resource information refers to the resource block information, the MCS
information, the transmitting power information, etc.; and the HARQ
information refers to the NDI information, the RV information, the HARQ
process information, etc.

[0096] Here, if the dedicated DCI does not carry the number of the
subframes, it means that before this step, the network element 2 already
obtains the number of the subframes through the protocol predefining, or
the RRC signaling or the MAC control element; or the network element 2
can obtain the number of the subframes according to the number of the
pieces of a plurality of resource information and a plurality of HARQ
information.

[0097] In step 2, the network element 2 performs the transmission over the
designated subframe according to the resource information, HARQ
information, etc., carried in the DCI.

[0098] Here, if the DCI carries one piece of resource information and one
piece of HARQ information, then the behavior of the network element 2 is
similar to the behavior in step 3 in embodiment two, and will not go into
details here one by one.

[0099] Here, if the DCI carries a plurality of pieces of resource block
information, then it indicates that the network element 2 occupies the
plurality of pieces of the resource block information sequentially over
the designated subframe and the continuous subframe, rather than the same
resource block information. Similarly, if the DCI carries a plurality of
pieces of MCS information, then it indicates that the network element 2
adopts the plurality of pieces of the MCS information sequentially. If
the DCI carries a plurality of pieces of transmitting power information,
then it indicates that the network element 2 adopts the plurality of
pieces of the transmitting power information sequentially. If the DCI
carries a plurality of pieces of NDI information, then it indicates that
the network element 2 performs the first transmission or retransmission
according to the plurality of pieces of the NDI information. If the DCI
carries a plurality of pieces of RV information, then it indicates that
the network element 2 adopts the plurality of pieces of the RV
information sequentially. If the DCI carries a plurality of pieces of
HARQ process information, then it indicates that the network element 2
occupies the HARQ process indicated by the plurality of pieces of the
HARQ process information sequentially

[0100] In step 3, when the number of the subframes is reached, it means
that the network element 1 finishes adopting the scheduling method of the
present invention to schedule the network element 2 to transmit.

[0101] Here, besides reaching the number of the subframes, there are the
following ways to indicate that the network element 1 finishes adopting
the scheduling method of the present invention to schedule the network
element 2 to transmit:

[0102] the way 1: the network element 2 receives the DCI in the current
format. The way 2: if the dedicated DCI carries an identifier indicating
to start adopting the scheduling method of the present invention in step
1, then the network element 2 receives the dedicated DCI carrying the
identifier indicating to finish adopting the scheduling method of the
present invention.

[0103] The way 3: the network element 2 receives the DCI which does not
carry the resource block information. The DCI is the DCI in the current
format or the dedicated DCI.

[0104] The network element 1 and the network element 2 have the following
combination: the network element 1 is a base station DeNB, the network
element 2 is a relay node RN, and the downlink control channel is an
R-PDCCH; the network element 1 is a base station eNB, the network element
2 is a user equipment UE, and the downlink control channel is a PDCCH;
the network element 1 is a relay node RN, the network element 2 is a user
equipment UE, and the downlink control channel is a PDCCH.

[0105] A scheduling system includes a scheduling unit and a
transmitting/receiving unit; wherein, the scheduling unit is configured
to schedule a network element 1 to transmit downlink message to a network
element 2, and schedule the network element 2 to transmit or receive data
over a plurality of subframes. The transmitting/receiving unit is
configured to, according to the downlink message, to transmit or receive
data over the plurality of subframes by using same or different
scheduling information by the network element 2.

[0106] Here, the scheduling unit is further configured to explicitly or
implicitly perform schedule indicating by the network element 1 to
schedule the network element 2 to transmit or receive data over one
subframe; or, schedule the network element 2 not to transmit or receive
data.

[0107] Here, the scheduling unit is further configured to transmit the
downlink message to the network element 2 through the network element 1,
and perform the explicit schedule indicating; or the scheduling unit is
further configured to perform the implicit schedule indicating by judging
whether a timer maintained by the network element 2 is expired.

[0108] Here, the Chinese and English of the above characters involved are
explained as: the subframe is represented as subframe; the period is
represented as periodicity; the TTI bundling is represented as TTI
bundling; the relay is represented as relay; the backhaul link is
represented as backhaul link; and the access link is represented as
access link.

[0109] The above description is only for the embodiments of the present
invention and is not intended to limit the protective scope of the
present invention.

INDUSTRIAL APPLICABILITY

[0110] In the present invention, the downlink message is transmitted to
the network element 2 through the network element 1 to schedule the
network element 2 to transmit or receive data over the plurality of
subframes; the network element 2 transmits or receives data over the
plurality of sub-frames by using the same or different scheduling
information according to the downlink message, thus the scheduling for
various network element can be achieved compatibly, and the present
invention is commonly suitable for scheduling various network elements.